portrait of TNB CEO Datuk Ir Megat Jalaluddin Megat Hassan since March 2024


President / Chief Executive Officer

Datuk Ir. Megat is the President and Chief Executive Officer, driving the company with a mission to brighten lives through innovative and sustainable energy solutions. As the former Chief Operating Officer, he propelled TNB's business growth and steered its energy transition agenda towards net-zero emissions, in line with Malaysia's carbon neutrality goal by 2050. He previously served as the Chief Strategy and Ventures Officer and Chief Retail Officer. He also holds the position of an adjunct professor at UNITEN and serves on esteemed advisory panels, such as the Industrial Advisory Panel (IAP) for Bachelor of Electrical and Electronics Engineering with Honours at the University of Technology Petronas. Furthermore, he contributes his expertise as a member of the Advisory Board of Asia IoT Business Platform (AIBP) and as the Head of SIRIM Malaysia Technical Working Group on Electrical Energy Measurement. With a proven track record spanning over 30 years, he is a visionary leader adept at transforming organizations across operations, strategy, and customer services.




Core Business

portrait of Genco managing director Ir Muhammad Nazri Pazil


Managing Director
TNB Power Generation Sdn. Bhd.

Ir. Muhamad Nazri bin Pazil brings over 30 years of experience in energy, utility, and manufacturing to his role as Managing Director of TNB Power Generation Sdn. Bhd. (TNB Genco). Committed to making TNB Genco the premier clean energy provider in Southeast Asia, he leads with a focus on growth, sustainability, and global impact. Currently, TNB Genco is Malaysia's largest power producer, owning 51.1% of installed capacity and operating 19.4GW assets globally. Notable achievements include completion one of the world's largest gas turbines project, establishing TNB Janamanjung, Malaysia's first IPP, and overseeing operations for Saudi Arabia's first IWPP. His expertise spans utility SAIDI improvement and operational leadership internationally.




portrait of TNB chief distribution network officer Ir mahathir nor ismail


Chief Distribution Network Officer

Mahathir, the Chief Distribution Network Officer, brings over 24 years of experience, holding diverse engineering and managerial roles. He has served as Managing Director of TNB Energy Services (TNBES) and TNB Engineering Corporation Sdn. Bhd. (TNEC). Additionally, he sits on the boards of TNB Retail Sdn. Bhd. (TRSB), TNBES, and joint-venture entities like FTJ Bio Power Sdn. Bhd., Metrosphere Hydro Tersat Sdn. Bhd. With prior directorship on over 10 TNB subsidiary boards, he brings extensive leadership insight. He is committed to enhancing Distribution Network performance, aligning with the National Energy Transition Roadmap (NETR). His focus on visibility, controllability, and energy management drives TNB's accelerated energy transition and customer participation.




portrait of TNB chief retail officer kamal arifin a rahman


Chief Retail Officer

Hj. Kamal Arifin bin A. Rahman is the Chief Retail Officer in Tenaga Nasional Berhad (TNB). Prior to the current appointment, he was the Head of Centralised Operations & Centre of Excellence in Retail Division, TNB. He has served more than 32 years, holding various portfolios in TNB namely, Special Officer in the offices of TNB Chairman and Senior Vice President before becoming the Head of State in Negeri Sembilan for 3 years. He is responsible for delivering the aspirational vision of TNB as a leading retail company of the future. His main tasks include enabling TNB’s new retail business growth in the kWh core business as well as beyond Energy products and services.




portrait of TNB CGO Hasmarizal Hassan Hassan since April 2024


Chief Grid Officer

Hasmarizal bin Hassan is the Chief Grid Officer (CGO) with over 27 years of experience in Engineering & Design, Operation & Maintenance, and Asset Development for the GRID Division. He ensures the long-term sustainable growth and profitability of the division through effective resource management and optimisation. Hasmarizal plays a pivotal role in guiding TNB in realising the ASEAN Power GRID and driving the Energy Transition agenda. He also plays a vital role in ensuring TNB provides timely and reliable supply to Data Centres. He holds a Master of Business Administration (MBA) from University Tenaga Nasional/Melbourne Business School and a Master of Engineering (M.Eng) from Imperial College of Science, Technology & Medicine, University of London.





Non-Core Business


Chief Operating Officer





portrait of TNB chief regulatory and stakeholder management datuk ir shamsul ahmad


Chief Regulatory & Stakeholder Management Officer

Datuk Ir. Ts. Shamsul is responsible for shaping the industry's future & regulatory landscape while driving high stakeholders' trust towards achieving TNB's aspirational vision. He began his career at various generation power plants. He has served TNB for more than 34 years with diversified experience holding numerous portfolios. Prior to this appointment, he was the Managing Director of TNB Fuel Sdn. Bhd. (TNBF). He was also the former Managing Director of TNB Janamanjung Sdn. Bhd. for 10 years. He graduated with a Bachelor of Science in Mechanical Engineering from North Carolina A&T State University, USA in 1988 & has a Master of Business Administration from Universiti Tenaga Nasional in 2006.





Chief Strategy & Ventures Officer





portrait of TNB chief financial officer Nazmi othman


Chief Financial Officer

Nazmi bin Othman holds the post of Chief Financial Officer, Group Finance in Tenaga Nasional. Some of his tasks include monitoring financial related activities to advise the CEO and Tenaga Board of Directors on key financial decisions. He leads Group Finance as an active strategic financial partner in driving Tenaga’s business aspirations, and achieving Group’s objectives. Besides this, he also ensures continuous improvement and review on key financial areas such as finance policies & procedures, system efficiency & processes, strategic financial risks, and staff competency.





Chief People Officer

Feldatun brings over 27 years of comprehensive experience in human resources (HR) and operations to her role as Chief People Officer. Prior to her appointment, she held pivotal portfolios including Head of Operations, TNB Global Business Solutions (TGBS) and Senior General Manager of People Strategy & Organization Effectiveness, Group HR. Her expertise in HR extends across multiple domains, including HR Strategy, Organizational Development, Workforce Planning, Talent Acquisition, Development & Deployment, HR Management & Operation, and Change Management. Her noteworthy achievements include leading TNB’s transformative initiatives including Value Unlocking Program and spearheading the establishment of TNB Integrated Shared Service Centre (now TGBS).




portrait of TNB chief procurement officer amir mahmod abdullah


Chief Procurement Officer

Amir Mahmod Abdullah is the Chief Procurement Officer. As part of his job scope, he defines and manages the long-term group-wide procurement strategy, defines the group-wide cost reduction initiatives, role and scope of central procurement, and defines implementation of best practices. He also oversees the overall skill building and knowledge transfer program. Besides all these, he oversees relationships and negotiations with strategic suppliers and the Bumiputra vendor development program. Lastly, in terms of policies and compliance, he deals with group-wide procurement policies and monitors procurement policies and auditing of compliance.




portrait of TNB chief information officer azlan ahmad


Chief Information Officer

As Chief Information Officer, Azlan Ahmad leads the company’s nationwide IT strategy and operations, spanning throughout the IT value chain, which include IT infrastructure, application, telecommunication network and cybersecurity. He is responsible for deploying holistic, secure and sustainable technology solutions across TNB, as well as driving the corporate digitalisation agenda. He holds a BSc. in Computation (Hons) from the University of Manchester Institute of Science & Technology (UMIST), United Kingdom, and Master of Business Administration (MBA) from the International Islamic University Malaysia (IIUM), Malaysia. Azlan Ahmad is also the Board of Directors for TNB-IT Sdn. Bhd. and Allo Technology Sdn. Bhd., both wholly owned subsidiaries of TNB.




portrait of TNB chief new energy officer mohd zarihi mohd hashim


Chief New Energy Officer

Prior to joining TNB, Zarihi was the Senior Director, Investment and a member of the Investment Committee at Ekuiti Nasional Berhad. His responsibilities extend across various investment lifecycles from deal origination, structuring, valuation, due diligence, operational value creation and investment exit. He was also the Vice President, Strategic Investment at Permodalan Nasional Berhad. His role was to maximise total shareholder return from key portfolio companies. He also served as the Vice President at Axiata Digital and Axiata Group. During his early career, he held various roles in management and I.T consulting with Accenture and A.T. Kearney. He was also an engineer at Motorola Semiconductor.




portrait of TNB chief global business solution officer datuk ahmad hushairi


Chief Global Business Solutions Officer

Datuk Ahmad Hushairi is responsible for the provision of shared services to TNB and its subsidiaries. The shared services comprised of Service Delivery, Security Services, Properties Services, Health Care, Fleet Management, Occupational Health Safety & Environment and Corporate Affairs. The centralized provision of shared services will yield higher quality and cost effectiveness while enabling the business entities within the TNB Group to focus on their core businesses. He aims to enhance TGBS efficiency, providing excellent customer experience and value for money services to their customers. Previously, he has held several key roles within TNB including Head (Retail Operations) and Head of Strategy for the Retail Division in his 35 years of service.




portrait of TNB chief sustainablity officer leo pui yong


Chief Sustainability Officer

Leo Pui Yong is the Chief Sustainability Officer at Tenaga Nasional Berhad (TNB) since 1st June 2023. Her role involves leading TNB's sustainability initiatives and ensuring they align with corporate goals to enhance resilience and long-term success. With over two decades of experience, she formerly served as Chief Risk Officer and held various engineering, auditing, and managerial positions. She graduated with a Bachelor's degree in Electrical & Electronic Engineering from Universiti Tenaga Nasional (UNITEN) and a Master's in Energy & Power Systems from the University of Malaya. Additionally, she is a Certified Internal Auditor (CIA) and holds the RIMS Certified Risk Management Professional certification.






Company Secretary

portrait of TNB company secretary ali munawar salim


Company Secretary

Ali Munawar bin Haji Salim, ACIS (CS) (CGP) has more than 28 years of expertise in corporate secretarial matters, compliance, and governance at Tenaga Nasional Berhad (TNB). He previously held the position of Senior Manager (Corporate Compliance) in Company Secretary's Office of TNB. He serves as Joint Company Secretary for TNB Power Generation Sdn. Bhd., Southern Power Generation Sdn. Bhd., Jimah East Power Sdn. Bhd., and other companies within the TNB Group.